Disk drill.



,831. PATENTED FEB. 18, 1908.

A. ARMITAGE & W. P. THISTLETHWAITE.

DISK DRILL.

APPLIUATION FILED APR.21. 1906.

W6 rvmoaco .i nearer @FFKQE.

ALBERT ARMITAGE, OF FAIRPORT, AND WILLIAM P. THISTLETHWAITE, OF MACEDGN, NEW

YORK, ASSIGNORS TO ONTARIO DRILL CO RATI ON OF NEW YORK.

No. eraser Specification of Letters Patent.

MPANY, OF DESPATCH, NEW YORK, A CORPO- DISK DRILL.

Patented Feb. 1.3, 18081.,

Original application filed April 24, 1905, $eria1 No. 257,053. Divided and an application liled April 21. 1906. Serial 1o. else-e.

To all whom it may concern:

Be it-known that we, ALBERT ARMITAGE, of l airport, in the county of Monroe, and l JILLIAM P. TmsrLE'rnWArrE, of Macedon, in the county of Wayne, both in the State of New York, have inventedcertain new and useful Improvements in Disk Drills; and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference numerals marked thereon.

- Our present invention. relates to grain drills and particularly to that class known as disk drills and it has for its object to provide a new and improved form of tool therefor comprising generally a rotary member or disk and scraping devices cooperating therewith to remove-dirt or other material adhering thereto which yieldingly engage the disk.

To these and other ends the invention consists in certain improvements and combina' tions of parts all as will be hereinafter more fully explained, the novel features being pointed out in the claims at. theend of the specification.

In the drawings; higure l is a detail longi-- tudinal sectional view of a grain drill illustrating devices embodying our invention asapplied thereto. 2 is a rear perspective view oiia tool. Fig. 3 is a similar detail view of the shoe and scraping'devices with the disk removed. Fig. 4 is a detaihsectional view taken on the line 4 l of Fig. i. Fig. 5 is a similar viewon the line 5 5 of 1. Fig. 6 is a view similar to Fig. 5 illustrating the position of the scraping devices before they are secured to the shoe. Fig. 7 is a detail-view on the line7 --7 of Fig. 1.

smear reference numerals in the several figures indicate similar parts. I The present application is a divisionof our prior application rior patent for improvements in grain drills, filed April 24th, 1905, Serial No. 257,053, and the parts described herein are shown asapplied to grain drills of the usual construction consisting generally of a rectangular fin-cine composed of side pieces 1 and front and rear pieces 2 and 3 respectively, on which is supported the seed and fertilizer hoppers i and 5 from which the material is distributed by suitable feeding mechanism 6 and conveyed by the conductor 7 to the rear of the tools.

Each tool is attached to the grain drill by a draw bar S'composed preferably of angle iron and arranged with one of its faces or sides as indicated by 9, in a vertical plane to which is secured a shoe orsu ort 10 forming part of the tool, provided wit 1 a boot leg 11, receiving the end of the conductor 7 saidtool embodying a dish-shaped disk 12 pericrated at its center and having upon its inner side an outwardly-projecting'recessed center piece. 13 provided with a tapering rejecting journal 14. The latter fits into a c illed or hardened bearing 15 which is removably secured in a laterally-extending hub on the shoe l0 and is prevented from rotation therein by a lug l6 engaging a slot 17 provided at one side of the bearing. Embracing the end 18 of the hub is a washer 19 through which the locking bolt 20 extends, its head and nut respectively engaging the faces of the center piece and washer. This arrangement of the parts, it will be seen, rovides a bearing which isin 'alinernent wit the disk instead of at one side thereof, thereby greatly reducing the wear of the parts and obviating the normal tendency o1 the disk to cramp or bind in its bearing. inasmuch as the are not formed perfectly and variations occur inv the curve of their surfaces and they'also wabble on their bearings, it is necessary that the scraping device employed inconnection therewith, be mounted in such a manner that its operation will not be aflected by either the imperfections in construction, or the irregularities of movement of the disk. lnthe present instance the scraping device is mounted on the face of the flange of the shoe which extends rearwardly from theboot 11 and above the rear edge of the disk and comprises two yielding blades 23. and. .22, the former extending downwardly and forwardly over theinner or concave face of the disk while the latter extends downwardly over the outer convex face and is provided with a downwardly and iorwardly proiecting. point 28. The blades are mounted on opposite sides of a block provided with shoulders or ribs (as shown) for accurately positioning them, against which they are held by a boltZi, which also secures them to the block. The blades are ment of the block on the lug 27 as a the lower end of the blade 22 will assume the position shown in dotted lines in Figs-'4. In practice this normal'tendenc of the blades to overlap ma be produced y making the face against w 'ch the blade 21 is clamped movecrum, causes the upper ends of the scraping blades to-be twists placing them under torsional tension to flatten their scraping ed es down position shown in Fig; .5. The rota %gainst thadisk, as shown in ful lines in 1g. 4. This spring tension causes the edige tie 28 of the blade 21 and the edge 29 of, blade 22 to tightly hug the opposite sides of the disk allowing them to yield suflieiently to 5 followjirregularities inthe disk itself and also to ciinform thereto if the disk rotates on an irregular or-worn bearing.

Tools constructed in accordance with our inventionrequire little machining and ma be cheaply manufactured and assembled w rile i the'parts o crate freely at all times, notwithstanding t e roughness of the work, with-a minimum of wear.

We claimas our invention:

1. In an agricultural tool, the combination with asupport and a disk revolubly mounted thereon, o a block detachably connected to the support and spring fingers rigidly connested to the block and yieldingly engaging opposite sides ofthe disk.

- 2, In an agricultural tool, the combination with a sup ort and a disk revolubly mounted thereon, o a block, spring fingers thereon en- I th reto, as shown the bolt 26 rotates the forward edge of i the block into engagement with the face of the support, and secures it thereon in the 1 azmgeopposite sides of the disk and means or connecting the block to the support to rotate it thereon to place said fingers under tension.

i with asupport and a disk revolubly mounted thereon, o

thereon with the wor ing edge of one no r-. mally extending laterally toward the con-e spending edge of the other, said fingers being port.

4. In an.agriculturalimplement, the-c0111- bination with a disk, 9. support on which the latter is journaled, a bloc havinginner and outer faces, of scraper fingers adaptedto en- I i an em resting against-one of said faces. on: i

ber attaching the latter to the support.-

with a sup ort and a revoluble disk mounted thereon, o a block, scraper fingers thereon ada ted to yieldingly engage opposite sides of t 1e disk and disposed relatively to each other on the block so that,;,p,;hen the latter is in the normal ositi'on spring tension is imparted to the gersand'i a'securing deviceor clamping the block to the support.

6. In' an agricultural tool, the combination with a disk, asupport on-whioh the latter is journaled having a face arranged above the disk at oneside thereof and provided with 0. lug, of a block cooperating 'with the lug, two scra er fingers secured to opposite sides of the lock and adapted to (-06 e'rat-e with o posite sides of the disk and a )olt detachah y securing the block to the face.

ALBERT 'AllMl'lAGE. 'lhhlAM- l. 'llllS'lLllTHil'Al'lE.

li'i tn'esses J. 11- THISTLETIIWAITE, E. D.L AP1IAM.

3. Inan agricultural tool, the combination a block, 3 ring fingers arranged. I

adapted to engage opposite sides of the-disk and means for securing the block to the supgage o posit-e sides of the disk, each having the block, a single attaching device seouring the blades to the block and a clal tping' inem- 5. In an agricultural tool, the combination 

